Gas-engine



(No Model.) 2 Sheets-Sheet 1.

J.A.GHARTVER. GAS ENGINE.

No. 532,314. Patented Jan. 8, 1895.

'mz "cams PETERS co., Pnoruumu, wxsmue'ron. D. c.

2 Sheets-Shea 2. J. A. CHARTER.

(No Model.)

GAS ENGINE.

Patented Jan. 8, 1895 viz/11111211111 I0 J I V NITED STATES PATENTOFFICE.

JAMES A. CHARTER, OF CHICAGO, ILLINOIS.

GAS-ENGINE.

' SPECIFICATION forming part of Letters Patent No. 532,314, datedJanuary'S, 1895.

Application filed March 10, 1892. Serial No. 424.429. (No model.)

To aZZ whom it may concern.-

Be it known that I, JAMES A. CHARTER, a citizen of the United States,residing at Chi-- cago, in the county of Cook and State of Illinois,have invented certain new and useful Improvements in Gas-Engines, ofwhich the following is a specification.

My invention relates to certain improvements in gas engines fully setforth hereinafter and illustrated in the accompanying drawings, inwhich- Figure 1 is a sectional elevation of an engine havingmyimprovements. Fig. 2 is a sectional plan. Fig. 3 is an elevation ofthe governing device Fig. dis an enlarged section of the nozzle; andFigs. 5, 6 and 7 are sectional views illustrating additional featuresthat maybe employed.

The cylinder A, the piston B, the exhaust device and its valve and theinlet port 3 for the mixed gases together with the base and theconnections between the piston and the driving shaft and any governingdevices and operating devices for moving the pump plunger may be of anyof the usual constructions apd I have illustrated those which are of acharacter heretofore used and which will be thoroughly understoodwithout any further description. The igniter may be in the form of anelectrical igniter, an ordinary flame igniter or as shown there may bean igniting tube 5. Air is drawn into the cylinder through a pipe 0,communicating with an enlargement or casing K containing a mixingchamber X, and above the latter is a casing T, from which the mixingchamber is separated by a valve 4, which is lifted by the exhaustingaction of the piston. Into the mixing chamber or into the pipe 0, belowthe mixing chamber extends a pipe 6, which is bent upward so as to forma nozzleC. This nozzle may be open at its inner upward end, as shown inFigs. 1 and 4:, or it may have a ball valve 7, as shown at Fig. 5, inwhich case a guard strip or wire 8, extends over the valve so as toprevent it from dropping from the end of the nozzle. In connection withthese parts I employ a pump D, which may be of any suitableconstruction, but as shown, the pump has a cylinder 9, and a plunger Ewhich moves back and forth in the cylinder, the latter communicatingwith the pipe 6, at

the side and alsocommunicating at the end with a valve casing 10, inwhich there are two valves 1, 2, the valve 1, lifting upwardly andcontrolling a port that is in connection with a pipea, leading to areservoir Q, of any suitable volatile hydro-carbon. The valve 2, opensdownward into a pipe b, that also extends to the reservoir Q. Thepassage 12, in the pipe 6, is controlled by a regulating valve L, whichmay be so set as to contract or enlarge the flow through said passage.

The plunger E, is connected by a link M,

with a lever N, turning upon a pivot supported by a bracket and aconnecting rod is connected with the lever N, and also is operated byany of the before mentioned connections or devices for imparting areciprocating motion to the rod and for throwing it out of operation.These parts are so arranged and timed that the oil pump plunger E,remains in the position shown in Fig. 2, during the outstroke or suctionstroke of the engine piston, in which position of the plunger E, thespace between {theplunger and the valves 1, 2, is filled with 'oil as isalso the channel 12, and the nozzle 0. During the outstroke of thepiston B, the said piston sucks in a current of air through the pipe 0,and chamber X, lifting the valve 4,

and this current of air draws with'it the oil from the nozzle and fromthe chamber or space between the plunger E and valves 1, 2, indeterminate quantity or at a regulated speed depending upon the extentto which the valve L, throttles the passage 12. Immediatelyafter the airand gas suction stroke of piston B, is .completed the instroke of theoil plunger E,

takes places closing the passage 12, sothat the surplus oil in the spacebetween theplunger and the valve is forced out from the said space andthrough the opening closed by the downwardly opening valve 2, back intothe reservoir Q. At the next forward movement of the plunger IE, itdraws in the oil through the port closed by the valve 1, until the saidplunger passes the channel 12, when as the plunger ceases to move theoil will flow into the said channel and upward to the nozzle in positionto be readily lifted by the next upwardly flowing current of air.

In the construction shown in Figs. 5 and 6, the ball valve 8, serves toclose the nozzle 6, upon every outstroke of the plunger E, but

the parts are proportioned to secure a larger stroke of the plunger, andthe valve will lift readily when there is an upfiowing current of air soas to deliver to said current the oil that maybe in the nozzle andcommunicating channel. In this construction the cam s, is inclined orsloping to permit the plunger to move inward gradually during thesuction stroke of the piston to force oil into the channel 12, andnozzle 0, as the air flows upward. When the main piston has completedits suction stroke the plunger IE, will have moved outward under theaction of the spring R, and have closed the channel 12 and the surplusoil will then be driven back. To insure the flow of the oil to thepassage 12, the passage 13, is restricted so that until the passage 12,is closed the flow will be partly through such passage 12. In eithercase the upward current of air can very readily aid to draw from thenozzle the oil that may be in the same; while in the construction ofFigs. 5 and 6, the act of the plunger aids the flow. With the valve 8,if there should be any back pressure resulting from premature explosionor otherwise, there can be no passage of flame back to the interior ofthe pump D.

The principal advantage of each of the arrangements described is thatthe pump draws in at each stroke a superfluous amount of material so asto supply just what may be required to the nozzle 0, and any over-plusisforced back upon the back movement of the T plunger into the reservoirQ. Further, by the means of the valve L, the passage 12, can be!throttled to any desired extent to regulate theit delivery to thenozzle. 5

As only a portion of the oil pumped at each stroke is used it ispossible to pump a much larger quantity of oil at each stroke'than ispossible in that class of devices where at each stroke only the exactquantity of oil required is moved by the pump. As a consequence it isnot necessary to employ delicately constructed valves or devices andmake such nice adjustments of the pump, and slight inaccuracies in themovement of the parts will not affect the quantity of oil which isactually supplied at each suction movement of the piston. Thus, by thismeans I am enabled to secure an accurate delivery of oil to the aircurrent without having an extremely accurate construction and operationof the pumping devices.

It will be seen that in the improved arrangement illustrated anddescribed the oil reservoir is below where the oil is taken into thepump and into the air passage. This has quite a number of advantages.Thus in case of any leakage the oil will not leak down from thereservoir into the air passage, while in the operation of the engine itis not possible for the oil to flow automatically at a greater speedthan would be secured by the operation of the pump so that there cannotbe any excessive supply of oil nor any excessive action of the engine.

It will of course be evident that the character of the pumping devicesand the arrange ment of the parts may be varied according to thecharacter of the engine as for instance whether it is a horizontalengine, a double actting engine, a vertical engine, &c.

It will be understood that I prefer to actuate the plunger E, by devicescontrolled bya cam s, and shifted by a governor in any suitable manneras for instance as shown in John Oharters Patent No. 455,388, so thatthe plunger is moved to the position shown in Fig. 2, during the exhauststroke of the main piston, but if the engine is moving too fast theplunger will be put out of operation.

WVithout limiting myself to the precise construction and arrangement ofparts shown and described, I claim as my invention- 1. In a gas engine,the combination with the cylinder and piston, and with the mixingchamber, of anozzle extending into a passage communicating with themixing chamber, a pump communicating with said nozzle and an oilreservoir communicating with the pump, through two passages controlled bwaives seated to lift in different directions to permit coming from thereservoir, into the reservoir, substantially as described.

' 2. The combination with the nozzle G, of a pump com municating withthe said nozzle and through two passages with a reservoir Q, with valveslifting in different directions in said passages, and a passage 12,between the nozzle and the pump arranged to be controlled by the plungerof the pump, substantially as set forth.

% 3. The combination with cylinder, piston, mixing chamberand the nozzle0 and pump, of a Valve at the mouth of the .nozzle,sub-

t In testimony whereof I have signed my name to this specification inthe presence of two subscribingwitnesses.

JAMES A. CHARTER.

Witnesses:

JOHN CHARTER,

J AMES HENRY.

the pump to force back any surplus material j \stantially as and for thepurpose described.

